XGY   Grimsby Mountain, ON Weather Observed At   43-11  N    79-34  W

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*** AURBO Watch In Effect ***

2026-08-19	6:30am			Max		Min
Weather		----
Temperature		18.1 °C		20.7 °C	3:11am	18.1 °C	6:21am
Relative Humidity		92 %		93 %	5:22am	83 %	2:21am
Dew Point		16.8 °C		18.3 °C	3:38am	16.7 °C	12:44am
Wind Velocity		41 ° at  0.1 G 1.7 kt		7.0 kt	4:17am
Pressure		29.861 "  ↑		29.889 "	12:00am	29.825 "	5:00am
Rainfall Rate		0.0 mm/h		19.6 mm/h	5:37am
Snow On Ground		0 cm
Brightness / Darkness		0 W/m² /  14.93 m/"²		0 W/m²	----m	20.03 m/"²	12:44am
Remarks

Rainfall	Today	6.8 mm	Storm Total	6.8 mm
Snowfall	Today	0.0 cm	Storm Total	0.0 cm

Evapotranspiration

Today

-0.00 mm

Lake Conditions

Water Temperature  21.8 °C

Waves  1 '

ICE FREE

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Meteor Index	64   Perseids
Aurora Index / Solar	53   Active   + 5 nT	Solar Flux   125  sfu  /   S 0    G 1    R 0   /  MUF   24.9 MHz

Sunrise	6:29am	Sunset	8:15pm
Moonrise	N/A	Moonset	N/A	Moon Phase	First Quarter

Grimsby Mountain Weather Maps
Local	Regional	Area	Synoptic
updated H+09 and every 10m	updated H+19 and H+49	updated H+19

Ontario 6-Hour Meteorological Summary

Canadian 6-Hour Meteorological Summaries

CLIMAT Data
Official	Yesterday					2004	2005	2006	2007	2008	2009	Normals & Records
		2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
		2020	2021	2022	2023	2024	2025	2026

Grimsby Mountain Charts

	Sky Quality (Darkness) Meter courtesy of

              

Wx Map	Sat Pix	IR Sat Pix	Radar	Lightning
	Water	Ice

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  This is a privately operated weather station that is part of the Meteorological Service of Canada's official observing network.
Permission to publish the weather statistics found on this website is not required.
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